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#include "mul.h"
#include "codes.h"
#include <asm/assembler.h>
#include <asm/operators.h>
#include <asm/intel64/codes.h>
using namespace std::string_literals;
Op_mul::Op_mul(const Asm::Args& args)
{
if (args[0].type() == typeid(Asm::Args::Register8)) { // mul reg8 (accu is ax <- al)
machine_code = std::vector<uint8_t>{ 0xF6 } +
ModRM("/4", std::any_cast<Asm::Args::Register8>(args[0]).name());
} else if (args[0].type() == typeid(Asm::Args::Register32)) { // mul reg32 (accu is edx:eax <- eax)
machine_code = std::vector<uint8_t>{ 0xF7 } +
ModRM("/4", std::any_cast<Asm::Args::Register32>(args[0]).name());
} else if (args[0].type() == typeid(Asm::Args::Register64)) { // mul reg64 (accu is rdx:rax <- rax)
machine_code = REX("W") + std::vector<uint8_t>{ 0xF7 } +
ModRM("/4", std::any_cast<Asm::Args::Register64>(args[0]).name());
} else if (args[0].type() == typeid(Asm::Args::Mem8Ptr64)) { // mul byte ptr [reg64] (accu is ax <- al)
Asm::Args::Mem8Ptr64 ptr{std::any_cast<Asm::Args::Mem8Ptr64>(args[0])};
machine_code = std::vector<uint8_t>{ 0xF6 } +
ModRM("/4", ptr.reg(), ptr.offs());
} else if (args[0].type() == typeid(Asm::Args::Mem32Ptr64)) { // mul dword ptr [reg64] (accu is edx:eax <- eax)
Asm::Args::Mem32Ptr64 ptr{std::any_cast<Asm::Args::Mem32Ptr64>(args[0])};
machine_code = std::vector<uint8_t>{ 0xF7 } +
ModRM("/4", ptr.reg(), ptr.offs());
} else if (args[0].type() == typeid(Asm::Args::Mem64Ptr64)) { // mul qword ptr [reg64] (accu is rdx:rax <- rax)
Asm::Args::Mem64Ptr64 ptr{std::any_cast<Asm::Args::Mem64Ptr64>(args[0])};
machine_code = REX("W") + std::vector<uint8_t>{ 0xF7 } +
ModRM("/4", ptr.reg(), ptr.offs());
} else {
throw std::runtime_error("Unimplemented: mul "s + args[0].type().name());
}
}
namespace {
bool registered {
registerOp(mangleName<Asm::Args::Register8>("mul"), [](const Asm::Args& args) -> std::shared_ptr<Op>{
return std::make_shared<Op_mul>(args);
}) &&
registerOp(mangleName<Asm::Args::Register32>("mul"), [](const Asm::Args& args) -> std::shared_ptr<Op>{
return std::make_shared<Op_mul>(args);
}) &&
registerOp(mangleName<Asm::Args::Register64>("mul"), [](const Asm::Args& args) -> std::shared_ptr<Op>{
return std::make_shared<Op_mul>(args);
}) &&
registerOp(mangleName<Asm::Args::Mem8Ptr64>("mul"), [](const Asm::Args& args) -> std::shared_ptr<Op>{
return std::make_shared<Op_mul>(args);
}) &&
registerOp(mangleName<Asm::Args::Mem32Ptr64>("mul"), [](const Asm::Args& args) -> std::shared_ptr<Op>{
return std::make_shared<Op_mul>(args);
}) &&
registerOp(mangleName<Asm::Args::Mem64Ptr64>("mul"), [](const Asm::Args& args) -> std::shared_ptr<Op>{
return std::make_shared<Op_mul>(args);
})
};
}
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